Mechanical movement



(No Model.)

s. (T. 13Rc)s11s. MECHANICAL MOVEMENT.

No. 503,122". Alwnjented Aug. 15, 1893,.

cawpa-:veau y" af' UNITED STATES PATENT OFFICE.

SAMUEL GLENVILLE BROSIUS, OF SAVANNAH, GEORGIA.

l M ECHANICAL MOVEM ENT.

SPECIFICATION forming part of Letters Patent No. 503,122, dated August15, 1893.

Original application filed January 20, 1892, Serial No. 418,721. Dividedand application filed December l, 1892, Serial No.

' 453,768. Again divided and this application filed December 29, 1892.Serial No. 456,734. (No model.)

To all whom it mag/concern:

Be it known that I, SAMUEL GLENVILLE BROSIUS, of the city of Savannah,State of Georgia, have invented a new and useful Improvement inMechanical Motions, of which the following is a specification.

My invention relates to improvements in that class of mechanical motionsproducing a variable or intermittent motion.

The object of my invention is to accomplish a smooth variable movementby the use of the working and driving eccentrics and their co-operatingparts, hereinafter described.

This application was led as a division of two other concurrently pendingapplications, which Vare now Patents Nos. 492,860 and 492,861,respectively, and in this is broadly claimed a mechanical combinationwhich is illustrated and described in said patents, but more specicallyclaimed therein in combination with other -mechanical devices.

In the accompanying drawings, which illustrate my invention: Figure 1,is an end elevation and a diagram showing the movement of the mechanicalmotion. Fig. 2, is an elevation of the working parte of the mechanicalmotion partly in section on the center line and on the line w Likeletters of` reference refer to like parts throughout the several views.

As shown in the figures, the eccentric A, rod B2 and yoke B of eccentricB and support or disk R revolve round shaft N, eccentric A and disk Rbeing secured thereto and driven thereby; eccentric B oscillates aboutsaid shaft N as a center. The levers F2 and D2 are respectively mountedon the disk R by the journals F and D, and connected by link E2, andarefree to oscillate about said journals and rotate with the said disk R.The lever H oscillates about the point H, which is secured stationarywith regard to the driving shaft N, and the said lever H is driven atthe end H2 by the eccentric A from its yoke A3 and eccentric-rod A4, andis made to oscillate through the are H2, H4, and the end H2 of the leverH is also connected to and drives the connecting-rod I2 by its journalI. The said rod 12, by its journal I', oscillates the eccentric Bthrough the arc I2 I4 by means of its lug B2. Said eccentric B isloosely mounted on the driving shaft N oscillating about it, while theeccentric A is secured to the shaft N which rotates with it and isdriven by it. The shafts F4 and D4 are mounted in a disk R, and are thepivotshafts by which the levers F2 and D2 are held in place, and themotion may be taken from either of these shafts.

The operation is as follows: Let shaft N, with disk R and eccentric A,which are mounted thereon, revolve in the direction shown by the arrowl. Then shaft N rotates as shown by arrow 5, driving eccentric A rotatesas shown by arrow 2, and working eccentric B will oscillate as shown byarrows 3 and 4, as hereinafter described. Let the centers of eccentricsA and B be located as shown at A2, and Z-f respectively. Then the leverH will be oscillating and the movement will be in the direction ofarrow, and the center of said eccentric B being controlled byconnectingrod I2, as described, is driven through points l, K, .LeDuring this time the disk R bearing the levers F2 D2 has turned to theright, carrying along therod B2 at such a rate that when the center Z fof the working eccentric has reached the point K, the end Z of the rodB2 has been carried to K and the center line Z, Z of the rod B2 and theworking eccen tric will lie on the linel K K; continuing, when thecenter of the working eccentric shall have moved to J, the end of therod has been carried toj; when the center has moved to i the end hasmoved to i. At this point the lever H has reached its lowest point, andis then beginning to be moved upward carrying along the rod l2, which inits turn causes the center of the working eccentric to be movedbackward, the center moving back to h, the end of the rod has beencarried to h', and so as the center moves through the points g, f, e, d,c, the end of the rod moves through the points g, f, c', d', c. When thecenter of the working eccentric is at c, the lever H has reached itshighest point; thus c corresponds with the point c'. The lever Hbeginning to descend, the center is moved back to b, andy so on througha, a to l Z, as shown in Fig. 1.

While the center line of the rod B2 is moving from jj to Z i', the rodB2 through its strap B is moved outward by the eccentric B; then thelevers F2, D2, and connecting link E2 take the positions shown in thedotted lines d2, e2, f2, and occupy this position during the time thecenter line of the rod B2 coincides with the lines h Zt', g g,f,f, e e,CZ', CZ, c', c; this time occupies one-half the revolution of the shaftN, and is known as the period of rest. From c c to Z Z, the rod B2,levers F2, D2 and link E2 are moving in from the position they occupyduring the period of rest to the position From Z Z to z t" they aremoving out again. The lever D2, herewith de- 1 as shown in Fig. l.

scribed, oscillates about its journal D, and rotates around shaft Nasacenter, said leverD2 1 being controlled by the eccentric B through itsrod B2and yoke B', the connection being made at journal end D by B". Thesaid end D of said lever is made to pass through the points Z, 7o', j',t', h', g', f', c', d', c', b', a to Z', which is also the diagram forthe variable motion imparted to the said lever D2and its end D VThismotion is produced by oscillating the eccentric B, as heretoforedescribed; and the end D of lever D2 in passing' through the points justdescribed, oscillates through the arc Z d2, and produces a variablemotion as shown in diagram.

the togglejoint action.

as rotating round it having it as a center, are g held stationary, andthe stationary center II,

about which the lever Il oscillates, is made to rotate round shaft N inthe direction of arl row 6, the co-operating parts driving and beingdriven by the lever I'l must necessarily;

follow it. Then the end D of lever D2, instead of describing acurveshown in the diagram, will have an oscillating movement through the arcZ,and cZ2,and back again for every complete revolution of the lever .l-lf round the shaft N as above. Changing the relative positions of thecenterA2and center.k Z--f of eccentric B, will give a different out;kline to the diagram by the use of the same co operative parts, and thesmooth and variable;

motion is also obtained.

The `driving and working eccentrics, with their co-operating parts,produce a vmovement that could not otherwise be obtained by cc`centrios, and for simplicity may be called a compound eccentric.

If desired, either thei lever D2 or F2 may be attached to its respect-.i

ive journal D or F, and the `motion derived by the compound eccentrictaken from said j journal shaft, or any other suitable meansI adoptedwhereby the said motion `may be transmitted.

This movement iswell adapted to any class of machinery requiring anirreguf lar or intermittent motion, such as that used in printingpresses, Shapers, harvesters, cut off valves of engines, the.

I do not limit myself to the construction and arrangement shown,as thesame may be varied without departing from the spirit of my invention.

Having thus fully, described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. In a mechanical movement, asupport, a driving eccentric, means fordriving said cccentric, a working eccentric loose on the shaft of thedriving eccentric, and connections between said .eccentrics, wherebysaid driving 4eccentric controls through said connections the operationof the working eccentric to produce a variable motion.

2. In a mechanical movement, a support, a driving eccentric, a workingeccentric having its center of rotation coincident with the cen ter lineof the shaft of the driving eccentric, and connections bet-Ween the saideccentrics.

3. In a mechanical movement, arotary disk, a driving shaft, a drivingeccentric operated by said shaft, a working eccentric, and atoggie-joint controlled bythe working eccentric, and a connecting-rodfor controllinglthe-working eccentric, .the latter being `operated bythe driving eccentric, whereby a variable motion is obtained.

4. In a mechanical movement, a rotary disk, a driving shaft, a drivingeccentric operated by said shaft, a working eccentric a togglejointconsisting of two levers and a connecting-rod, said toggle-jointibeingcontrolled by the working eccentric, and a connecting-rod operatedby the `driving eccentric and controlling the working eccentric.

5. In a mechanicalmovcment, arotary disk, a driving eccentric, means foroperating said eccentric, a Working eccentric, connections between saideccentrics,:and .a toggle-joint controlled by the Working eccentric,saiddriving eccentric controlling through said connections the operation ofthe working eccentric to produce a variable motion.

6. In a mechanical movement, a support, a shaft, a driving eccentricmounted thereon, a working eccentric loosely `mounted on said shaft andoscillating thereon, and connections between said eccentrics.

'7. In a mechauicalmovement, a rotarydisk, a shaft, a drivingeccentricmounted thereon, a working eccentric mounted on said shaft andoscillating thereon, connections between said eccentrics, and atoggle-joint controlled by said Working eccentric.

8. In a mechanical movement, a support, a shaft, a Vworking eccentricloosely mounted on said shaft and oscillating thereon, and means foroscillating said eccentric.

9. In a mechanical movement, the combination of a driving eccentric, anoscillating eccentric having its center of oscillation coincident withthecenter lineof the shaft of the `driving eccentric, and a connectingrod `for IOO IIO

controlling the oscillating eccentric through to this specification, inthe presence of two the driving eccentric. witnesses, on this 24th dayof December, A. 1o

10. In a mechanical movement, the combi- D. 1892.

lnation of a, drivino1 eccentric and an oscillat- 5 ing workingeccenbtric upon the same shaft, SAMUEL GLENVILLE BROSIUS' andconnections whereby the driving eccen- Witnesses: `tric operates theworking eccentric. E. L. HARLOW,

In testimony whereof I have signed my name HELEN DURWARD.

